CN209244093U - Ultra-high performance concrete is without regular reinforcement Prestressed U type beam - Google Patents
Ultra-high performance concrete is without regular reinforcement Prestressed U type beam Download PDFInfo
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- CN209244093U CN209244093U CN201821605373.1U CN201821605373U CN209244093U CN 209244093 U CN209244093 U CN 209244093U CN 201821605373 U CN201821605373 U CN 201821605373U CN 209244093 U CN209244093 U CN 209244093U
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- high performance
- performance concrete
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Abstract
The utility model discloses ultra-high performance concretes without regular reinforcement Prestressed U type beam and its construction method.Prestressed U type beam includes bottom plate, web and the edge of a wing；Two blocks of webs are connect with the both ends of bottom plate respectively, form U-shaped structure；The edge of a wing is set to the top of web；Deformed bar is equipped in the edge of a wing and bottom plate；The material of Prestressed U type beam is ultra-high performance concrete.The Prestressed U type beam uses ultra-high performance concrete, does not lay regular reinforcement in beam body, reduces the manufacture difficulty of beam, shortens manufacturing time, compression strength and tensile strength are all higher.It is mainly used for the civil engineering structures such as the access bridge of the girder secondary beam of building structure, Urban Bridge that span is 20m to 100m, high speed road and bridge, large bridge.
Description
Technical field
The utility model relates to technical field of buildings, in particular to ultra-high performance concrete is without regular reinforcement Prestressed U type
Beam.
Background technique
Traditional U-shaped beam of civil engineering needs to configure common longitudinal reinforcement, common stirrup and common bent-up bar, this will lead to
Complicated construction technique, production cycle length and the construction quality for preparing U-shaped beam are affected by worker's qualification.And it is common
Reinforced beam needs cast in situs, is affected by construction condition, can not apply under the severe weather conditions such as heavy rain
Work.The self weight of especially conventional concrete beam section is larger, this makes substructure and based process relative difficulty, is unfavorable for structure
Aseismic Design.This causes to improve the requirement to construction equipment and technique in the preparation, transport, construction of beam section.
Ultra-high performance concrete (Ultra-High Performance Concrete), abbreviation UHPC means axis in the world
Heart compression strength is in 150MPa or more, the general designation with superhigh tenacity, the cement-base composite material of overlength durability.As novel
Construction material is applied to field of civil engineering to be had with obviously advantage, main feature: (1) UHPC material is because its design is strong
Degree is high, can reduce the deck-molding of i-shaped beams, effectively mitigation dead load.(2) UHPC material has excellent fire resistance, corrosion resistant
Corrosion and durable sexual clorminance.(3) UHPC material has the features such as early strength development is fast, later strength is high, and time deformation is small.
(4) i-shaped beams of UHPC material are built and maintenance cost is lower than the construction and maintenance cost of steel, have stronger cost excellent
Gesture.
Utility model content
The purpose of the utility model is to overcome the defect of the prior art and deficiencies, provide a kind of ultra-high performance concrete
Without regular reinforcement Prestressed U type beam.The Prestressed U type beam uses ultra-high performance concrete, does not lay regular reinforcement in beam body, subtracts
Lack the manufacture difficulty of beam, shortens manufacturing time, compression strength and tensile strength are all higher.
The purpose of this utility model can be achieved through the following technical solutions:
Ultra-high performance concrete is without regular reinforcement Prestressed U type beam, including bottom plate, web and the edge of a wing；Two pieces of abdomens
Plate is connect with the both ends of the bottom plate respectively, forms U-shaped structure；The edge of a wing is set to the top of the web；The edge of a wing and
Deformed bar is equipped in bottom plate；The material of the Prestressed U type beam is ultra-high performance concrete.
The upper and lower surface of the bottom plate is horizontal plane as a preferred technical solution, and the upper surface on the edge of a wing is level
Face.
Two blocks of webs are symmetrically obliquely installed as a preferred technical solution,.
The connection between the bottom plate and the web uses straight chamfering or rounded corner mistake as a preferred technical solution,
It crosses；Connection between the web and the edge of a wing uses straight chamfering or rounded corner transition.
The edge of a wing is equipped with L v notch v as a preferred technical solution,.
The material of the deformed bar is steel wire, steel strand wires or fining twisted steel as a preferred technical solution,.
The deformed bar is answered in advance using pre-tensioning system or the application of post-tensioned construction method as a preferred technical solution,
Power.
The Prestressed U type beam is prefabricated components as a preferred technical solution, and beam length is 20m to 100m.
The utility model compared with prior art, is had the following advantages and beneficial effects:
1, the Prestressed U type beam of the utility model is combined using ultra-high performance concrete and deformed bar, effective use
The advantages of high-tensile of the high compressive strength of ultra-high performance concrete material and deformed bar.
2, regular reinforcement is not laid inside the Prestressed U type beam of the utility model, the manufacture difficulty of beam can be reduced, shorten system
It makes the time, improves manufacturing quality.
3, the free height of the Prestressed U type beam of the utility model and total weight are effectively reduced, and can reduce lower part
The cost of structure and basis, the U-shaped beam of lighter in weight can be used for the structure design in high-intensity earthquake area.
4, the depth of section of the Prestressed U type beam of the utility model is relatively small, can reduce the interference to traffic under beam, can
The device requirement of component conveying, lifting construction is effectively reduced.
5, the Prestressed U type beam of the utility model is prefabricated components, is assembled at the construction field (site), can effectively reduce template
And bracket dosage；Site operation efficiency can be greatly improved, is shortened the construction period, and is conducive to civilized construction；Prefabricated components are by site operation
The less-restrictive of condition can construct under the severe weather conditions such as small space, heavy rain；The Cheng Liang in precasting yard, construction team
Stablize, working condition is superior more than scene, and the quality of component is higher, and the production cycle stablizes, be highly convenient for the quality of production and
Progress exercises supervision management.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view in the utility model embodiment as the Prestressed U type beam of central sill
Fig. 2 is the schematic cross-sectional view in the utility model embodiment as the Prestressed U type beam of side bar
Detailed description of the invention: 1: bottom plate, 2: web, 3: the edge of a wing, 4: deformed bar
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
As shown in Figure 1, providing a kind of ultra-high performance concrete in the utility model embodiment without regular reinforcement Prestressed U
Type beam, the Prestressed U type beam include 1, two block of web 2 of bottom plate and the edge of a wing 3.The upper and lower surface of bottom plate 1 is horizontal plane, bottom plate 1
Both ends connect respectively with two blocks of webs 2, two blocks of webs 2 are symmetrically obliquely installed.Connection between bottom plate 1 and web 2 is using straight
Chamfering or rounded corner transition.The edge of a wing 3 is set to the top of web 2, and the upper surface on the edge of a wing 3 is horizontal plane, between the edge of a wing 3 and web 2
Connection use straight chamfering or rounded corner transition.
The top on the edge of a wing 3 is provided with L v notch v, and L v notch v is rectangle, for placing the prefabricated U HPC plate of connection.Such as
Shown in Fig. 1, when as central sill, L v notch v is both provided on two side wing edges of Prestressed U type beam.As shown in Fig. 2, as side bar
When, L v notch v is provided on a wherein side wing edge for Prestressed U type beam.
More deformed bars 4 are provided in bottom plate 1 and the edge of a wing 3.The both ends of bottom plate 1 are respectively arranged with two prestress steels
Muscle 4 is respectively arranged with two deformed bars 4 in two side wing edges 3.Prestressed U type beam provided by the utility model is not laid
Regular reinforcement can save steel flxer sequence and the time of prefabricated components, improve the durability and construction matter of U-shaped beam indirectly
Amount.The material of deformed bar 4 is steel wire, steel strand wires or fining twisted steel.Deformed bar is applied using pre-tensioning system or post stretching
Work method applies prestressing force.
Prestressed U type beam provided by the utility model is prefabricated components, and the production matter of U-shaped beam can be improved in prefabricated components
Amount reduces production cost, shortens field installation time.Total beam length of Prestressed U type beam is 20m to 100m.Prestressed U type beam
Material is ultra-high performance concrete, ultra-high performance concrete material under same load working condition, the deck-molding of Prestressed U type beam, from
Equal safe performance indexes improve a lot than normal concrete beams again.
Using the construction method of pre-tensioning system preparation Prestressed U type beam, include the following steps:
According to the external form of Prestressed U type beam and construction demand, Prestressed U type beam carries out integral construction or uses section assembling
Construction, using the template of steel production Prestressed U type beam.Deformed bar in the U-shaped beam of prestressed, using reinforcing bar or steel
Locating rack positioning processed, carries out fixation.Prestressed reinforcement of tensioning.Ultra-high performance concrete mixing is carried out using mixing plant,
Ultra-high performance concrete is carried out to template using haulage vehicle or storage hopper to pour.Ultra-high performance concrete reaches preset strength
When, form removal.Carry out it is preliminary it is wet support after, carry out 40 degrees Celsius to 90 celsius temperature steam curings, curing time maintains 24
Hour was to 96 hours.The connection of deformed bar and reinforcing bar or steel locating rack is cut off, prestressing force is applied.
Using the construction method of post stretching preparation Prestressed U type beam, include the following steps:
According to the external form of Prestressed U type beam and construction demand, Prestressed U type beam carries out integral construction or uses section assembling
Construction, using the template of steel production Prestressed U type beam.The deformed bar pipeline of the U-shaped beam of prestressed, using reinforcing bar or
The positioning of steel locating rack, carries out fixation.Ultra-high performance concrete mixing is carried out using mixing plant, using haulage vehicle or
Storage hopper carries out ultra-high performance concrete to template and pours.When ultra-high performance concrete reaches preset strength, form removal.It carries out
It is preliminary it is wet support after, carry out 40 degrees Celsius to 90 celsius temperature steam curings, curing time maintains 24 hours to 96 hours.It lays
Deformed bar, prestressed reinforcement of tensioning.Seal deformed bar stretching end and anchored end, and to deformed bar pipeline into
Row grouting.
Prestressing force is applied to deformed bar using pre-tensioning system or post stretching, and Prestressed U type beam is prepared.Prestressing force
After the completion of U-shaped beam construction, rubber-tyred crane or tracklaying crane or Bridge Erector lifting can be used.
Prestressed U type beam provided by the utility model is mainly used for the girder for the building structure that span is 20m to 100m
Beam, Urban Bridge, high speed road and bridge, large bridge the civil engineering structures such as access bridge.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (8)
1. ultra-high performance concrete is without regular reinforcement Prestressed U type beam, which is characterized in that including bottom plate, web and the edge of a wing；Two
Web described in block is connect with the both ends of the bottom plate respectively, forms U-shaped structure；The edge of a wing is set to the top of the web；Institute
It states and is equipped with deformed bar in the edge of a wing and bottom plate；The material of the Prestressed U type beam is ultra-high performance concrete.
2. ultra-high performance concrete according to claim 1 is without regular reinforcement Prestressed U type beam, which is characterized in that described
The upper and lower surface of bottom plate is horizontal plane, and the upper surface on the edge of a wing is horizontal plane.
3. ultra-high performance concrete according to claim 1 is without regular reinforcement Prestressed U type beam, which is characterized in that two pieces
The web is symmetrically obliquely installed.
4. ultra-high performance concrete according to claim 1 is without regular reinforcement Prestressed U type beam, which is characterized in that described
Connection between bottom plate and the web uses straight chamfering or rounded corner transition；Connection between the web and the edge of a wing is adopted
With straight chamfering or rounded corner transition.
5. ultra-high performance concrete according to claim 1 is without regular reinforcement Prestressed U type beam, which is characterized in that described
The edge of a wing is equipped with L v notch v.
6. ultra-high performance concrete according to claim 1 is without regular reinforcement Prestressed U type beam, which is characterized in that described
The material of deformed bar is steel wire, steel strand wires or fining twisted steel.
7. ultra-high performance concrete according to claim 1 or 6 is without regular reinforcement Prestressed U type beam, which is characterized in that institute
It states deformed bar and prestressing force is applied using pre-tensioning system or post-tensioned construction method.
8. ultra-high performance concrete according to claim 1 is without regular reinforcement Prestressed U type beam, which is characterized in that described
Prestressed U type beam is prefabricated components, and beam length is 20m to 100m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821605373.1U CN209244093U (en) | 2018-09-29 | 2018-09-29 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam |
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| CN201821605373.1U CN209244093U (en) | 2018-09-29 | 2018-09-29 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam |
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| CN209244093U true CN209244093U (en) | 2019-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057148A (en) * | 2018-09-29 | 2018-12-21 | 中路杜拉国际工程股份有限公司 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam and its construction method |
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2018
- 2018-09-29 CN CN201821605373.1U patent/CN209244093U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057148A (en) * | 2018-09-29 | 2018-12-21 | 中路杜拉国际工程股份有限公司 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Ultra high performance concrete prestressed U-beam without ordinary reinforcement Effective date of registration: 20220316 Granted publication date: 20190813 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: ZHONGLU DURA INTERNATIONAL ENGINEERING Co.,Ltd. Registration number: Y2022980002693 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |